m3gtr, i don't think comparing HSV with the GTR or the 911 is a fair measure. Where the porsche and the nissan are track focused, hi-po racers, HSV build an accountant's luxo-barge.
In my opinion, a fairer comparison would be HSV vs VW Phaeton (260kW V8, $115,000AU) or Bentley Flying Spur (412kW W12, $Left Testicle). In this environment, it becomes more apparent that the HSV is a cut price luxo-barge, in the same way that the GTR is a cut price supercar. Sure, it doesn't have the techno gadgetry of the euros, for $40k less it still does the basis of comfort, power and the ability to swallow large distances without any effort.